Hoisting and conveying apparatus.



A. LAMBERT. HOISTING AND CONVEYING APPARATUS.

Y, APPLICATION FILED FEB.10, 1909.

.Patented Dec. 13, 1910.

3 SHEETS-SHEET 1.

A. LAMBERT. HOISTING yAND CONVEYING APPARATUS. APPLIOATION FILED 11:11.10. 1909. f

Patented Dee. 13,1910.

3 SHEETS-SHEET 2.

WVM/lessee" l A 1 miJvaHc-new E A. LAMBERT.

HOISTING AND CONVEYING APPARATUS.- APPLIOATION FILED 2113.10. 1909.

978, 3 1 2. y Patented Dec. V13, 1910.

3 BHBETB-BEBET 3'.

Qitncooco: Snom/Lto@ UNITED STATES PATENT OFFICE.

SHER LAMBERT, 0F NEWARK, NEW JERSEY.

HOISTING- AND CONVEYING APPARATUS.

Specication of Letters Patent.

'Patented Dec. 13, 1910.

Original application filed May 3, 1806, Serial No. 314,926: Divided and this application led February 10, 1909. Serial No. 477,157.

To all whom 'it' may concern.:

Be it known that I, AsHnR LAMBERT, a citizen of the United States, and-a resident of Newark, in the county of Essex and State of New Jersey, have made certain new and useful In'iprovements in' Hoisting and Conveying Apparatus, of which the tolle g is a full, clear, and exact description.

This invention relates to automatic apparatus employing buckets for excavating, ill- -1ng, hoisting, removing. and discharging earth, vcoal or other materials, and in the method of operating such buckets.

The object of the invention is to obviate the evil effect of heat generated by friction in lowering the bucket and to provide a separate independent detached ating in connection with the hoisting engine so that said means may be replaced or shifted about as occasion may require.

The improvement in the method ofoperating the bucket consists in employing two ropes which are fixed to the bucket, one beinga closing and hoisting rope, the other an opening and lowering rope. The hoisting rope is connected with one drum of a hoisting engine, the lowering rope is connected to a separate independent means which is detached from the engine. The bucket. is then hoisted by one rope,`its support shifted to the second rope, the load discharged and the bucket lowered While supported by said second rope.

The accompanying drawings illustrate the invention.

Figure 1 is a side elevation of the bpcket, hoisting engine, a derrick,l and the inde- -pendent means for lowering the bucket.

Fig. 2 is a top plan view. Fig. 3 is a perspective View of the separate detached independent means for gradually lowering the bucket,

In Fig. '1, there is a hoisting engine h having rotating drums d, e, and f. The derrick has a vertical mast 10, a swinging .boom l1, a turn table therefor 12, and a stiftI leg or brace 13. The bucket b is shown of the clam shell pattern. The rope 1 passes around the pulley 72,' when supported by the r )pe 1- the bucket is automatically closed. The rope m is the lowering rope and is connected to the joint or hinge y' of the bucket 7),' when supported upon the rope m the l bucket automatically opens and discharges means but opercl or e. The rope n' is operated by one of the drums d ore and is reeved through the pulleys 15, 16 and 17, its outer end `being xed at the point 18; this rope when operated raises and lowers the boom 11. rope o passes around the Winches f, function of the ropefo and Winches f is to turn the bull wheel or turn table 12. There are a Series of framing or foundation timbers z" laid in position and secured together to support the derrick, and there is a frame lc upon which the hoisting engine is fixed.

here which into gear and lstarted and movement in a well known 7"; the

The

are controlling devlces 20 and 21 by and is operated by one of the drums either l A means for operating the lowering and i opening rope m is shown in Fig. 3; this consists of a pulley 30 on a shaft 31 in suitable bearings carried -by the brackets 32. There are a 33. There is a brake wheel-34, a strap friction brake 35 with wooden 'contact blocks or shoes 36 and a controlling lever 37 deslgned to be operated by the foot. This device may be located on the frame lf: of the engine asshown in Fig. 1 or may be separately sup orted in a detached position as shown in tIhe'plan view, Fig. 2. It is composed of comparatively light material .so as to be easily portable and it may be easily substituted by a duplicate device if it becomes heated or injured. The opening and/ lowering rope m passes over the pulleys s, g and w to the pulley 30the'nce over the pulley 40 supported from the sti leg 13 and is fixed to a point 41 on the stili' leg 13. On the rope m between the points 40 and 41 there is a weight having a pulley 42. This pulleytakes up the slack in the ro e fm. as the hoisting rope f," raises the bucket The operation is asfollows: The bucket b is in contact withthe earth 0r broken stone to be removed. The engine is started to hoist on the rope r, the pulley p is thus turned and the bucket is closed to grab the earth and is hoisted to the desired height. The boom 1] is turned and hoisted to bring the bucket b over the desired discharge point; the weight takes up the slack in l the rope m, it is now desired to discharge the bucket, the friction brake l 37 is operated by the foot, the ropem isV held, `the hoisting pair of these brackets and they I are located upon an independent foundationy tion described the hoisting and lowering.

rope 7* is slacked, theweight of thebucket is thrown onto the rope m, the bucket b 'auto' maticallyopens and Adischarges and While the bucketl b is supported by and from the rope m, the friction brake 37 'is so manipu- .lated as to allow the bucket to gradually descend.` In this manner the heat and friction due to applying the brake to the hoisting drum is avoided. By the use of the means described and the method of operamay be continued rapidly and indefinitely l without heating the o erating parts -of vthe hoisting drum and wit out 4generating sufficient accumulated heat' in=the means for lowering the bucket to cause trouble or inconvenience.

By the usek of the means described a two drum enginewhich is commonly carried'in stock and is available at short notice may f be made. to per-form the duties of a three means for hauling on one of said ropes to raise the bucket, means for shifting the Weight of the bucket from one rope to the other and a separate, independent means for lowering said bucket While supported upon said second rope.

2. The combination of a. self opening bucket, a .hoisting rope, a controlling rope, means' for hauling' on` one of said ropes lto raise the bucket, 'means for -shiftin weight of the bucket from one ropa the other and a separate inde endent means for gradually lowering said ucket While supported upon said second rope.

3. The combination of a self opening bucket, a hoisting rope, avcontrolling rope, means for haulingI on one of said ropes to raise the bucket, means for shiftingl the u Y Weight of the bucket from one rope to the 'other and a'separate detached means for gradually lowering said bucket while supported upon said second rope.

A vASI-IER LAMBERT. Witnesses:

T.,M.`WATsoN, Jri. M. G. BENFER. 

